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Flight Reliability

DL 1226 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1226 moved between routes during this period. Numbers below combine all of them, so treat them as background, not a verdict. For a cleaner answer, check the route you are actually flying.

Combined across all its routes

86%
Arrive within 15 minutes
1 min early
Average arrival delay
0.3%
Cancelled
11 min early
Median arrival delay

Based on 637 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon84%(88 flights)
  • Tue92%(89 flights)
  • Wed88%(89 flights)
  • Thu92%(92 flights)
  • Fri87%(93 flights)
  • Sat85%(92 flights)
  • Sun74%(91 flights)
On-time by departure window
  • 6–9 AM91%(116 flights)
  • 9 AM–12 PM85%(336 flights)
  • 12–3 PM84%(165 flights)
  • 3–6 PM—(2 flights)
  • 9 PM–12 AM87%(15 flights)
On-time trend by month
95%
May

Jun 85% → May 95% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202585%53
July 202589%62
August 202584%62
September 202591%54
October 202594%62
November 202583%58
December 202576%50
January 202673%30
February 202682%45
March 202687%60
April 202686%42
May 202695%56
Departures on time
87%
Diverted
0.2%
Flights flown
634
Months covered
12

Keep nerding

Based on 637 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.